Door.



W. J. BOHAN.

DOOR.

APPLICATION FILED APR.7.19I7.

lxo lloll bll nY o Patented Apr. 15. 1919.

O O M M I 0 Z WITNESSES:

v ren- WILLIAM J. BOHAN, OF ST. PAUL, MINNESOTA.

DOOR.

neonate.

Specification of Letters Patent.

Patented Apr. 15, 11919.

Original application filed July 12, 1915, Serial Ito. 39,288. Divided and this application filed. April 7, 1917.

Serial No. 160,383.

To all whom it may concern:

Be it known that 1, WILLIAM J. Bonner, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a certain new and useful Improvement in Doors, of which the following is a full, clear, concise, and

filed July 12, 1915, for improvement infreight cars.

In the drawin forming a part of this specification, the gure represents a side elevation of a freight car door and a portion of a car side, illustrating my improvements in connection therewith.

In said drawing, the side wall of the car is shown as provided with a side door opening which is defined by side posts -10, lintel 11 and threshold 12, the side posts and lintel being formed by a continuous channel-shaped member in the manner described in my said application No. 39,288.

The improved door, as shown, consists of a frame-work formed by a single commercial-shaped beam A. Said beam A is preferably of channel-shape in cross section and comprises a lower .limb 13, upwardly extending side member 14, diagonally extending bracing portion 15, vertically extending side member 16, and horizontal top limb 17. All of said sections of the frame, 13, 14, 15, 16 and 17, are integral, and the free end of the limb 1-3 is riveted to the member A at the corner, as indicated at 18, and the free end of the limb 17 is similarly riveted to the member A at the opposite corner, as indicated at 19. Where the corner bends are formed in the member A, the outer flange is flattened down, as indicated at. 2020, and the lower flange on the limb 13 and the upper flange on the limb 17 are also preferably flattened. Secured to the frame thus formed, is a single sheet of steel, designated generally by the reference B. The door is suspended from a track T by means of roller carrying brackets 21-21, and in order to maintain the lower part of the door in proper position, guiding brackets 22-22 are used. 1

The advanced edge of the door is limited 1n its closing movements by a stop bracket 23 and the door is locked in closed position by a latch 24, the locking means being claimed in another divisional application filed of even date herewith.

In the drawing, the sheet B is shown as riveted to the member A but, as will be understood by those skilled in the art, other means may be employed such as spot weldin for rigidly uniting the two elements.

Vith the arrangement herein shown and described, it is apparent that the door is fire proof and on account of employing a single element for forming the entire framework of the door, the framework is exceedingly strong and the diagonal section 15 thereof is so positioned as to minimize any tendency of the front lower corner of the door to sag. The door may be formed and shipped as a unit and readily applied to a car, as will be understood by those skilled in the art.

1. As an article of manufacture, a door for freight cars and the like, said door comprising a rectangular framework formed by a single, commercial-shaped beam, said beam having side members, top member, bottom member and a diagonal brace all formed integrally; and metal sheathing secured to sa1d framework.

2. As an article of manufacture, a door for freight cars and the like, said door comprising a framework and metal sheathing secured thereto, said framework being formed of a single channel-shaped beam bent to provide top, bottom and side'members of the framework and integral diago nally extending brace, the outer flange of the channel being flattened at the corners where the channel is bent.

In witness that I claim the foregoing I have hereunto subscribed my name this 22nd day of March, 1917.

WILLIAM J. BOHAN. itnesses:

GEO. F. Ennrco'r'r, Tiios. R. WILLIAMs. 

